CoolProp

This section includes information about the CoolProp software, listings of inputs, etc.

• Available Wrappers
  • Common Wrapper Prerequisites
    • Windows
    • Linux
    • OSX
• High-Level Interface
  • Versions
  • PropsSI function
  • Vapor, Liquid, and Saturation States
  • Imposing the Phase (Optional)
  • Fluid information
  • Trivial inputs
  • PhaseSI function
  • Partial Derivatives
    • First Partial Derivatives for Single-phase States
    • Second Partial Derivatives for Single-Phase States
    • First Saturation Derivatives
  • Predefined Mixtures
  • User-Defined Mixtures
  • Reference States
  • Calling REFPROP
  • Adding Fluids
  • C++ Sample Code
  • C++ Sample Code Output
  • Sample Code
  • Table of string inputs to PropsSI function
• Low Level Interface
  • Introduction
  • Generating Input Pairs
  • Keyed output versus accessor functions
  • Things only in the low-level interface
  • Imposing the Phase (Optional)
  • Disambiguating Multiple Saturation Roots
  • Partial Derivatives
  • Two-Phase and Saturation Derivatives
  • Reference States
  • Low-level interface using REFPROP
  • Access from High-Level Interface
• Tabular Interpolation
  • General Information
  • TTSE Interpolation
  • Bicubic Interpolation
  • Accuracy comparison
  • Speed comparison
  • Mixtures
    • Table folder naming
  • More Information
• SVDSBTL — SVD-Compressed Tabular Lookup Backend
  • What it is
  • Constructor & supported pairs
  • The on-disk table cache
  • The in-memory surface cache
  • Three performance regimes
  • Critical-patch bbox
  • Configuration keys
  • When to use SVDSBTL
  • Accuracy envelope
  • Deviation plot
  • Programmatic access
    • Low-rank SVD lookup for 2D property tables
    • SVDSBTL backend — validation against HEOS
    • Heat-exchanger speedup with the SVDSBTL backend
• Backend Options
  • Grammar
  • Use from the high-level interfaces
  • Strict validation
  • Reproducibility — build_options_json() and cache keys
  • Opting a backend in
  • Migration from Configuration globals
  • Design rationale
• Configuration Variables
  • Environment Variables
  • Configuration Keys
• REFPROP Interface
  • Path Issues
  • Other Platforms
  • Other Features
• Cubic Equations of State
  • Introduction
    • Caveats
  • Pure Fluids
    • Usage
    • Speed
    • Superancillaries for SRK and PR
  • Mixtures
    • Interaction Parameters
    • Critical Points
    • Cubics in multi-fluid model
    • Detailed Example
  • Volume Translation
    • What changes and what does not
    • Setting the translation
  • Adding your own fluids
    • Complete fluid schema
• PC-SAFT Equations of State
  • Introduction
    • Caveats
  • Pure Fluids
    • Usage
  • Mixtures
    • Interaction Parameters
• GERG-2004 and GERG-2008 Equations of State
  • Introduction
  • Usage
  • Components
  • Range of validity
  • What these backends deliberately do not provide
    • Transport properties
    • Superancillaries
    • Mutable binary interaction parameters
  • Data GERG does not publish, derived here
    • Acentric factor
  • Known limitations
    • Which input pairs actually work
    • Mixture DQ and DmolarP flashes
    • Compositions with two or more exactly-zero mole fractions
    • Saturation states below the enforced Tmin
    • Properties GERG does not define at all
    • set_reference_stateS and set_reference_stateD are not available
    • The strictness rules are model-level, not C++-level
    • Tabular backends wrapping GERG
    • Helium and hydrogen are supercritical-only as pure fluids
    • Reference state
  • Relationship to CoolProp’s default HEOS mixture model
  • Implementation notes and references
• Examples
  • Sample Props Code
  • Sample HAPropsSI Code
  • Plotting
    • Python Plotting
    • Cycle Calculations
• Changelog for CoolProp
  • 8.0.1
  • 8.0.0
  • 7.2.0
  • 7.1.0
  • 7.0.0
  • 6.8.0
  • 6.7.0
  • 6.6.0
  • 6.5.0
  • 6.4.3
  • 6.4.2
  • 6.4.1
  • 6.4.0
  • 6.3.0
  • 6.2.1
  • 6.2.0
  • 6.1.0
  • 6.0.0
  • 5.1.2
  • 5.1.1
  • 5.1.0
  • 5.0.8
  • 5.0.7
  • 5.0.6
  • 5.0.5
  • 5.0.4
  • 5.0.3
  • 5.0.2
  • 5.0.1
  • 5.0.0
• Superancillaries
  • Motivation
  • Theory and Approach
    • Caveats:
  • Other validation checks to confirm accuracy
  • Checks against extended precision
• Robust, fast \(H\),\(S\) flash
  • The difficulty
  • Strategy: anchor where a matching-entropy state must exist, then march
    • Leg 1 — saturation anchor
    • Leg 2 — supercritical isentrope
    • Leg 3 — ideal-gas departure homotopy
  • The corrector: Newton in \((T,\ w=\ln\rho)\)
  • Acceptance gate and the uniqueness theorem
  • Try it
  • Performance map
  • References & implementation
• Ideal-gas properties